440138752 has 22 divisors (see below), whose sum is σ = 879849728. Its totient is φ = 220068864.

The previous prime is 440138749. The next prime is 440138767. The reversal of 440138752 is 257831044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213888 + ... + 215935.

Almost surely, 2^440138752 is an apocalyptic number.

It is an amenable number.

440138752 is a deficient number, since it is larger than the sum of its proper divisors (439710976).

440138752 is an equidigital number, since it uses as much as digits as its factorization.

440138752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429843 (or 429825 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 440138752 is about 20979.4840737326. The cubic root of 440138752 is about 760.6704333347.

Adding to 440138752 its reverse (257831044), we get a palindrome (697969796).

The spelling of 440138752 in words is "four hundred forty million, one hundred thirty-eight thousand, seven hundred fifty-two".